Lexmark C510 Service Manual - Page 220

5021-0XX 3 = operational serial port #3. • P represents the number of times the test has passed (finished successfully). Initially 000000 is displayed for ######. The maximum pass count is 999,999. • F represents the number of times the test has failed or finished with errors. Initially 00000 is displayed for #####. The maximum fail count is 99,999. Note: The power indicator blinks indicating the test is running. Each time the test finishes, the screen updates with the result. If the test passes, the pass count increases by 1, however if the test fails, one of the following failure messages displays for approximately 3 seconds and the fail count increases by 1: Receive Status Interrupt Error Receive Data Interrupt Error Transmit Empty Error Receive Data Ready Error Framing Error Overrun Error Data 232 Error FIFO Error DSR PIO Error CTS Error CTS PIO Error Status Error Transmit Data Interrupt Error Threshold Error Break Interrupt Error Parity Error Data Error Data 422 Error DSR Error DSR Interrupt Error CTS Interrupt Error Once the maximum count is reached the test stops and the final results display. 3. Press Return or Stop to exit the test. 3-12 Service Manual